Sound pickup by the styllus

[eof1973]

Hi . I just bought a FLUANCE RT81 with cartridge Shure M44-7 and connected to my KA-5700. I noticed that when I closed the dust cover somehow the needle pick up the sound. I tried also tapping the TT and it produces a sound. Is this normal?

 

[lovinthehd]

Yes but some are better damped/isolated from vibration. Watch your bass doing some of the same.

 

[eof1973]

Yes but some are better damped/isolated from vibration. Watch your bass doing some of the same.

Thanks. I noticed also when when I can not full swing my Def Tech BP8020ST because it will produce a hum.

 

[Bucknekked]

Thanks. I noticed also when when I can not full swing my Def Tech BP8020ST because it will produce a hum.

I am not sure I understand that last post. The first post about the TT picking up a sound, I got that one. I just didn't get what you were trying to say with the Def Tech post.

 

[lovinthehd]

Thanks. I noticed also when when I can not full swing my Def Tech BP8020ST because it will produce a hum.

I have no idea what swinging your speakers is. I wasn't referring to hum as much as bass induced rumble some turntable suspensions are prone to. What sort of hum? Ground loop more comes to mind....

 

[slipperybidness]

I have no idea what swinging your speakers is. I wasn't referring to hum as much as bass induced rumble some turntable suspensions are prone to. What sort of hum? Ground loop more comes to mind....

Must be playing Duke Ellington........that swing!

 

[highfigh]

Hi . I just bought a FLUANCE RT81 with cartridge Shure M44-7 and connected to my KA-5700. I noticed that when I closed the dust cover somehow the needle pick up the sound. I tried also tapping the TT and it produces a sound. Is this normal?

This is due to sound transfer from the base to the tonearm. It happens more with direct drive turntables, but it's normal for the ones that don't come with a stupid price tag. As long as sound energy from the speakers doesn't reach the stylus, you're OK. If it does, you'll definitely hear it and sometimes, it sounds like howling. This is called 'feedback' and it can kill your speakers.

 

[eof1973]

I have no idea what swinging your speakers is. I wasn't referring to hum as much as bass induced rumble some turntable suspensions are prone to. What sort of hum? Ground loop more comes to mind....

This is due to sound transfer from the base to the tonearm. It happens more with direct drive turntables, but it's normal for the ones that don't come with a stupid price tag. As long as sound energy from the speakers doesn't reach the stylus, you're OK. If it does, you'll definitely hear it and sometimes, it sounds like howling. This is called 'feedback' and it can kill your speakers.

Thank you very much to all of you. Audiophyte still learning.

 

[vsound5150]

This is due to sound transfer from the base to the tonearm. It happens more with direct drive turntables.

I've been debating to purchase an isolation platform to sit my turntable on like the Gingko Cloud or a dedicated stand or both for my direct drive turntable. I remember reading about belt vs direct drive noise transfer but forgot until you mentioned it, I think you just sold me.

 

[slipperybidness]

I've been debating to purchase an isolation platform to sit my turntable on like the Gingko Cloud or a dedicated stand or both for my direct drive turntable. I remember reading about belt vs direct drive noise transfer but forgot until you mentioned it, I think you just sold me.

I highly doubt that an isolation platform is gonna do anything to mitigate any motor noise. The motor resides inside the chassis of the TT! To mitigate motor noise, you need to decouple the motor from the platter and chassis.

In a belt drive TT, the belt decouples the motor from the platter, and hopefully you have some sort of suspension to decouple the motor from the chassis. This is how my Pro-Ject does it.

For the SL1200 line, the platter is an integral part of the motor. The SL1200 line does not suffer from motor noise typical of lesser DD TTs.

 

[Bucknekked]

In a belt drive TT, the belt decouples the motor from the platter, and hopefully you have some sort of suspension to decouple the motor from the chassis. This is how my Pro-Ject does it.

slipperybidness
I will take your post as a ringing endorsement of belt drive turntables. Since I purchased a belt drive machine in 2016 that makes me feel all warm and fuzzy.

All you direct drive folks, please don't come in and rain on my parade. I love it when somebody says something nice about something I just bought. My inner child is happy right now.

 

[slipperybidness]

slipperybidness
I will take your post as a ringing endorsement of belt drive turntables. Since I purchased a belt drive machine in 2016 that makes me feel all warm and fuzzy.

All you direct drive folks, please don't come in and rain on my parade. I love it when somebody says something nice about something I just bought. My inner child is happy right now.

Yup, but you ignored the part about the DD SL1210. Technics DD are the real deal!

I'm equal opportunity! DD for the man cave, BD for the living room.

 

[MarkTheShark]

I had an Audio Technica direct drive turn table that would pick up the drive unit. I could hear the hum during quiet and silent parts of songs.

 

[vsound5150]

I highly doubt that an isolation platform is gonna do anything to mitigate any motor noise. The motor resides inside the chassis of the TT! To mitigate motor noise, you need to decouple the motor from the platter and chassis.

In a belt drive TT, the belt decouples the motor from the platter, and hopefully you have some sort of suspension to decouple the motor from the chassis. This is how my Pro-Ject does it.

For the SL1200 line, the platter is an integral part of the motor. The SL1200 line does not suffer from motor noise typical of lesser DD TTs.

I think I need a new shelf more than an isolation platform. I have an issue when walking near the turntable causes it to move it's sitting on a 3 ft. high cheap cabinet shelf with weak legs that sways easily.

I can't hear any motor noise from my direct drive it's actually pretty clean sound. I get the vinyl crackling noise sometimes which I like hearing sort of takes me back in time...nostalgic. If my CD's could do that it wouldn't be the same

I want to try an isolation platform to see if it will help sound quality at all. I play music fairly loud where I hear all the weaknesses.

 

[slipperybidness]

I think I need a new shelf more than an isolation platform. I have an issue when walking near the turntable causes it to move it's sitting on a 3 ft. high cheap cabinet shelf with weak legs that sways easily.

I can't hear any motor noise from my direct drive it's actually pretty clean sound. I get the vinyl crackling noise sometimes which I like hearing sort of takes me back in time...nostalgic. If my CD's could do that it wouldn't be the same

I want to try an isolation platform to see if it will help sound quality at all. I play music fairly loud where I hear all the weaknesses.

OK, then that is a different story. Yes, you really want a rock-solid platform for your TT.

 

[lovinthehd]

Yep, solid piece of furniture should help. Some direct drives are superior to belts for speed accuracy and wow/flutter, tho. My Technics SL1200mk2 rules!

As far as suspending the whole tt, as was said, if the problem is primarily in the tt, putting a fancy suspension under it won't do it. I at one point thought to try some sorbothane feet to supplement my 1200's when I had it on a less than ideal shelf....actually made it worse. Might have been the wrong durometer, but was matched up by suggested weight....

 

[eof1973]

I highly doubt that an isolation platform is gonna do anything to mitigate any motor noise. The motor resides inside the chassis of the TT! To mitigate motor noise, you need to decouple the motor from the platter and chassis.

In a belt drive TT, the belt decouples the motor from the platter, and hopefully you have some sort of suspension to decouple the motor from the chassis. This is how my Pro-Ject does it.

For the SL1200 line, the platter is an integral part of the motor. The SL1200 line does not suffer from motor noise typical of lesser DD TTs.

When you say decoupled the motor from the platter and chassis what do I need to do? Thanks

 

[eof1973]

I am not sure I understand that last post. The first post about the TT picking up a sound, I got that one. I just didn't get what you were trying to say with the Def Tech post.

What I'm trying to say is when I max my sub it will reverberate loudly. I think that's the feedback someone had mentioned.
I'm just curious because one of my friend try to tap the tonearm (not the body) a sound is being pick-up but not as loud as mine. Thanks.

 

[Verdinut]

I think I need a new shelf more than an isolation platform. I have an issue when walking near the turntable causes it to move it's sitting on a 3 ft. high cheap cabinet shelf with weak legs that sways easily.

I can't hear any motor noise from my direct drive it's actually pretty clean sound. I get the vinyl crackling noise sometimes which I like hearing sort of takes me back in time...nostalgic. If my CD's could do that it wouldn't be the same

I want to try an isolation platform to see if it will help sound quality at all. I play music fairly loud where I hear all the weaknesses.

Hi,
Another way to isolate floor vibration from the turntable which is usually very effective, is to put the TT on a shelf securely fixed to a wall.

 

[lovinthehd]

When you say decoupled the motor from the platter and chassis what do I need to do? Thanks

Probably more than would be worth vs buying a different tt.